The Christmas single ' When a Child is Born' accompanied by the RTÉ Concert Orchestra is available now on iTunes.

All proceeds from the single will go to the work of the national depression support organisation.

'I am very involved in the idea of stigmabreaking around mental health issues, and so am delighted all proceeds of this song are going to support that cause,' said Sinead.

Danny said he jumped at the chance to work with O'Connor.' To get to sing with Sinead was incredible, and something I'll never forget,' he said. 'She picked out some gorgeous harmonies. It was daunting but once I met her she was so lovely and everyone in the orchestra was lovely. I was delighted to help out because it is such a good cause as well.'